Mathematics High School


Solve each quadratic inequality then test their interval of the inequality.
1. x² - x - 20 > 0
2. x² - 2x - 11 < 0
3. x²+ 9x + 14 > 0
4. r² - 10r + 16 > 0​​

Answers

Answer 1

Answer:

1 . x < − 4 or x > 5

2 . 1 − 2 √ 3 < x < 1 + 2 √ 3

3 .x < − 7 or x > − 2

4. r < 2 or r > 8

Step-by-step explanation:

Related Questions

The length of a rectangle is 6 yd longer than its width. If the perimeter of the rectangle is 76 yd, find its length and width.

Answers

Answer:

W=16

L=21

Step-by-step explanation:

76=2W+2(W+6)

    =2W+2W+12

76=4W+12

64=4W

    4

16=W

check:

L=16+6=22

P=2(22)+2(16)

=76

The length is 22 unit and width is 16 unit.

What is Algebra?

A branch of mathematics known as algebra deals with symbols and the mathematical operations performed on them.

Variables are the name given to these symbols because they lack set values.

In order to determine the values, these symbols are also subjected to various addition, subtraction, multiplication, and division arithmetic operations.

We have,

The length of a rectangle is 6 yd longer than its width.

If the perimeter of the rectangle is 76 yd.

let the width be x then length is (x+ 6).

So, Perimeter of rectangle = 2(l + w)

76 = 2(x + x +6)

38 = 2x+ 6

2x = 32

x = 32/2

x = 16

So, the length is 22 unit and width is 16 unit.

Learn more about Algebra here:

https://brainly.com/question/24875240

#SPJ2

Describe the possible lengths of a third side of the triangle given the lengths of the first two sides are 5 yards and 24 yards respectively.

Answers

Answer:

Length must be between 19 and 29 yards

Step-by-step explanation:

The sum of any two sides must be greater than the third

HELLO! HOW ARE THEY? I HOPE PERFECT. : D

(I JUST NEED THE WASTE)

0.075÷345

1.2÷1422

2.5÷5..

0.3÷4355..

0.34÷85..
------------------------------------------------------------------------------------

( The points that appear next to some dividends are numbers that have yet to be entered. In general it is 0)

(Please don't answer like crazy, ... PLEASE.​

Answers

Answer:

00.75

Step-by-step explanation:

00.75 is the answer

find an irrational number that is between 7.7 and 7.9 explain why is irrational include the decimal approximation of the irrational number to the nearest hundredth

Answers

Pretty sure it’s 7.8

evaluate 7000 x 0.8
please help asap!!

Answers

Answer:

5600

plz mark brainllest

In the equation x^2 + 5/4x + c, why is 0.390625 the answer?

Answers

Answer:

= 56°Find the measure of angle a.

Step-by-step explanation:

Which describes the correlation shown in the scatterplot?
There is a positive linear correlation.
There is a negative linear correlation.
There is no positive or negative correlation.
There is a nonlinear correlation.

Answers

Answer:

c

Step-by-step explanation:

Answer:

cccc

Step-by-step explanation:

What is 5 nineths times 12

Answers

6.666666 and so on so about 7

V=1/3 bh solve for b

Answers

Answer:

b = 3V/h.

Step-by-step explanation:

V=1/3 b h

b h = V / 1/3

b h = 3V

b = 3V/h.

PLS HELP ASAP THANKS ILL GIVE BRAINLKEST

Answers

Answer:

X < 4

Step-by-step explanation:

Your welcome

What is the cost to get into a Red Cab?
How much does it cost per mile for a Red Cab
What is the equation, in slope-intercept form, for the Red Cab?
What is the cost to get into a Green Cab?
How much does it cost per mile for a Green Cab?
What is the equation, in slope-intercept form, that relates the cost compared to the miles traveled for a Green Cab?

Answers

Step-by-step explanation:

we had this just in 2 separate questions.

so, just as summary :

red taxi : y = 2x + 2

green taxi : y = x + 5

y are the costs of a ride, x are the miles of a ride.

the y-intercepts are the cost of just getting into a cab (0 miles).

so, that is $2 for a red cab and $5 for a green cab.

every mile with a red cab costs $2, while every mile with a green cab costs $1.

1. change .84 to a fraction, reduced
2. 3xy if x=6 and y=-4
3. -2(x+y) if x=6 and y= -4
4. p=21+2w, if l=10, w=6 1/2
5. a=1/3 bxh if b =10 and h=8

Answers

Answer:

1. 21/25

2. 72

3. -4

4. Typo?

2I+2w= 33

21+2w=34

5. Dont understand this question withought context

Step-by-step explanation:

1. 84/4 and 100/4 is 21/25

2. 3(6)(-4) miltiplication

3. worry about parenthesis first, a positive plus a negatative goes to minus so 6-4 then multiply 2 times -2 and get -4

4.

2I+2w is 2(10)+2(6.5)

21+2w is 21+2(6.5)

Which integer is the same distance from -14 as it is from 36 on the number line?

Answers

Answer:

25

Step-by-step explanation:

For what values of the variable does the following expression make sense: square root of -10b

Answers

Answer:

b<=0

the answer is that.

or b<_ 0


It took Gavin 1 1/2 to finish his homework,
It took Micah one hour 45 minutes to finish his
homework. Which student took less time on his
homework? Explain

Answers

Gavin took 1 hour and 1/2


1/2 of an hour = 30

So that means Gavin took 1h 30m

Micah took 1h 45m

1h 30m is less then 1h 45m

In conclusion the answer is Gavin

Michael buys a basket of mangoes on sale for $4 before tax.


​


​The sales tax is 12%


​


​What is the total price Michael pays for the basket of mangoes?

help pl

Answers

Answer:

The answer is $4.48

Step-by-step explanation:

To get the total price you take 4.00 * 0.12 = 0.48

Then you add the $4.00 to the 0.48 and get $4.48

please help will give you brainliest

Answers

Answer:

2nd

Step-by-step explanation:

C. the system has infinitely many solutions

PLEASE HELP!
find f(g(2)) if f(x)= 4x^2 and g(x)= 3x+2

Answers

Answer:

256

Step-by-step explanation:

First, find g(2):

g(2) = 3(2)+2 = 6+2 = 8

Now, plug that result into f(x):

f(8) = 4(8)^2 = 4*64 = 256

what's the answer??
my guesses are 6 1/2 or 4 1/2​

Answers

Answer:

3 1/2

Step-by-step explanation:

Answer: 3 1/2

Step-by-step explanation: This is because we started on 8 1/2 so you would need to add a halve which brings us to 9. 12 - 9 = 3 + 1/2 = 3 1/2.

Guys pls help me!!!!!

Answers

Answer:

44444433333333yfgvtug8yuhg0h7y

Step-by-step explanation:

easy one - giving brainly if correct - show work.​

Answers

Answer:

$51,000

Step-by-step explanation:

A raise of 20% would raise Laura's salary to $60,000 ($50,000 × 1.2) - we multiply by 1.2 because 1.2 = 120% which is her new salary compared to her old one ($50,000 is 100% and $60,000 is now 120%)15% of her new salary is $9,000 ($60,000 × 0.15) - we multiply by 0.15 because 0.15 = 15% which is what we are finding of her new salaryAt the end of the year Laura has $51,000 ($60,000 - $9,000)

Hope this helps!

Team 2, serves the ball at 2-0-2, Team 1 returns the ball, and Team 2 volleys the ball with no return past Team 1. What is the call and what is the score

Answers

Answer:

23

biojsnlcmdcjdoa'sncwds cjewolmkdac

PLEASE HELP 30 pnts!!! Select from the drop-down menus to correctly complete the statements about the expression 5k+m3 .
The expression 5k+m/3 is a
sum or difference
. The term 5k is an addend, but it is also a
difference or product
. The term m/3 is an addend, but it is also a
sum or quotient
.

Answers

The expression  5k+m3  is a sum. The term 5k is an addend, but it is also a product. The term m3  is an addend, but it is also a quotient.

The students at Cara’s school voted between a bear and a lion as the new school mascot. Of the 100 students at Cara’s school, 97 voted for the bear.

What percentage of students voted for the bear?

Answers

Answer:

97%

Step-by-step explanation:

Find the sum of (x — 4) + (2x – 7).

PLEASE FAST NO WORK NEEDED

Answers

Answer:

X = 11 + -2x

Step-by-step explanation:

Solution:

(x-4)+(2x-7)

= x + 2x - 4 - 7

= 3x - 11

Answer:

3x - 11

Hope it helps.

Do comment if you have any query.

ALGEBRA Find x and y so that the quadrilateral is a parallelogram. a x = 20, y = 12 b x = 20, y = 160 c x = 129, y = 51 d x = 168, y = 12
i need this right now !!

Answers

Get a load of this!!


What is the slope of the line that passes through the points (-2, 3) and (-14, -5)?
Write your answer in simplest form.

Answers

Step-by-step explanation:

m = (y2 - y1)/(x2 - x1)

m = (-5 - 3)/(-14 + 2)

m = -8/-12

m = 2/3

Slope = 2/3

convert the following quantities



a. 565,900 seconds into day
b. 17 years into minutes
c. 43 miles into feet
d. 165 pounds into kilograms
e. 100 yards into meters
f. 22,647 inches into miles
g. 2678cm into feet
h. 60 miles per hour into meters per second
i. 130 meters per second into miles per hour
j. 1,100 feet per seconds into miles per hour
k. 53 yards per hour into inches per week
l. 721 lbs per week into kg per second
m. 88 inches per second into miles per day
n. 12080 gallons per month into liters per hour
o. 27 miles per gallon into kilometers per liter
p. 186, 282 miles per seconds into meters
​

Answers

Answer:

6.54976852

8935200

227040

74.8427

91.44

0.35743371

87.86089

26.8224

290.802

750

320544

0.000540741

120

62.640718

11.4789

1609.34

Step-by-step explanation:

what is 17 million times 7

Answers

119,000,000 that is the answer

Answer:

119 million

Step-by-step explanation:

7x17

119

We can split the 17 into 10 and 7

7x10 = 70

7x7 = 49

70+49 = 119

Isabella has $50.45 that she saved over 5 weeks of babysitting and doing odd jobs for her parents. How much money did she earn per week?

Answers

Answer:

9

Step-by-step explanation:

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